2017-03-31_17-54-50.txt

    public class BankAccount
    {
        double balance;
        public BankAccount()
        {
            balance = 0;
        }
        public void deposit(double amount)
        {
            balance += amount;
        }
        public void withdraw(double amount)
        {
            balance -= amount;
        }
        public void display()
        {
            Console.WriteLine(balance);
        }
    }